package cn.tedu.v3_1;

import java.io.*;
import java.net.*;
import java.util.*;

/**
 * Client 客户端--改成 Sever 端模式 【优化】
 */

public class Client {
    private Socket socket;
    private static final String HOST="127.0.0.1";
    private static final Integer PORT = 4545;
    private String ip;
    private BufferedReader br;
    private PrintWriter pw;
    public Client() {
        try {
            socket = new Socket(HOST, PORT);
            br= new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF8"));
            pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF8")), true);
        } catch (NullPointerException e) {
            System.out.println("友情提示：IP传入错误导致连接失败~");
        } catch (UnknownHostException e) {
            System.out.println("友情提示：IP传入错误");
        } catch (ConnectException e) {
            System.out.println("客户端连接失败：建议检查IP或者端口号");
        } catch (IOException e) {
            System.out.println("客户端链接服务器失败，提示：检查IP/端口");
        }
    }

    public void start() {
            try {
                new Thread(() -> {
                    try {
                        String message;
                        while ((message = br.readLine()) != null) {
                            System.out.println("服务器端说：" + message);
                            System.out.println("客户端请输入：");
                        }
                    } catch (IOException e) {
                        System.out.println("服务器端读入失败了");
                    }
                }).start();


                Scanner input = new Scanner(System.in);
                while (true) {
                    System.out.println("客户端请输入：");
                    String say = input.nextLine();
                    pw.println("客户端说：" + say);
                }
            }  finally {
                if (br!=null)
                    try {
                        br.close();
                    } catch (IOException e) {
                        System.out.println("客户端关闭失败");
                    }
                if (pw != null)
                    pw.close();
                if (socket != null && !socket.isClosed()) {
                    try {
                        socket.close();
                    } catch (IOException e) {
                        System.out.println("通讯关闭失败");
                    }
                }
            }
        }






    public static void main(String[] args) {
        new Client().start();
    }
}
